package com.happystudy.mapper;

import com.happpystudy.model.grade.Grade;

import java.util.List;

public interface GradeMapper {
    int insert(Grade record);

    int insertSelective(Grade record);

    Grade selectGradeByKey(Grade grade);

    int undateGrade(Grade grade);

    List<Grade> selectAllByUserId(Integer userId);
}